The integrated system of stretch-blow moulding, filling and capping featured by Smiform ECOBLOC® HC ERGON VMAG/VMAS series combines the functions of a rotary stretch-blow moulder, of an electronic rotary filler and of a rotary capper.

The ECOBLOC® integrated system stands out for:

compact modular frame, with a wide choice of customization options;

latest technology innovations adopted in the machine design;

perfect synchronization between the “dry” environment of the stretch-blow moulding module and the “wet” environment of the filling module;

minimum number of transfer star wheels, as the stretch-blow moulding module and the filling/capping module stand ”back to back”, with no need for connecting conveyors;

operating and maintenance costs dramatically cut;

outstanding price/quality ratio.

The models of the ECOBLOC® HC ERGON VMAG/VMAS series are the ideal solution for manufacturing, filling and capping PET, PEN and PP containers of many different sizes and shapes, from the simplest to the most complex and innovative. Combining stretch-blow moulding, filling and capping in one single machine offers major economic benefits:

no need for a rinser, accumulation conveyors and conveyors between the blower and the filler;

virtual elimination of container contamination risks;

considerable reduction of line inefficiency causes;

dramatic cutback of operating and maintenance costs.

All models are equipped with an innovative bottle transfer system, minimizing the risks of product contamination and increasing the machine’s overall performance; Smiform ECOBLOC® HC ERGON VMAG/VMAS integrated systems can be employed in the bottling lines of the following products:

FLAT WATER and MILK (VMAG Models)

EDIBLE OIL (VMAS Models)

ECOBLOC® HC ERGON VMAG-VMAS

Max. output (BPH)

7200

Cavities

6

1Preforms feeding The preforms are transferred from the hopper to the unscrambler through a lifting belt; the unscrambler conveys them to an inclined guide, from where they reach the spacer star wheel at the heating module infeed, by gravitational fall. The star wheel feeds the rotary mandrel chain, through which the preforms are “captured” and let into the heating module.

2Preforms heatingBefore entering the heating module, equipped with infrared lamps, each preform undergoes accurate checks, which detect its size and vertical position and automatically eliminate the preforms not compliant with the pre-set parameters. The preforms, supported by the mandrels, start moving along the heating module. During the heating process, the preforms constantly turn around themselves, so as to ensure an excellent and symmetrical heat distribution. The heating module is equipped with two different cooling systems: a liquid-fed cooling system, in order to cool the protection ring preventing the preforms thread deformation during the heating process; an air-fed cooling system, in order to keep the temperature inside the heating module as low as to avoid the exposure of the preforms outside walls to too high temperatures. At the heating module outlet, a sensor detects the preform temperature and compares it with the temperature set point; if the two values do not correspond, it increases or decreases the heating module lamps power.

3Preform stretch blow-moldingA special rotary group of grippers picks up the preforms from the oven and sets them into the stretch-blowing stations. The stretch-blowing process includes two phases: - stretching and pre-blowing, which occur simultaneously through the descent of the motorized stretching rod and the supply of low-pressure compressed air;- final blowing with high-pressure compressed air, through which the containers take their final shape. A counter-pressure air system ensures the perfect locking of the moulds, whereas the mechanical locking of the mold-holders allows bearing the strengths generated by the stretch-blow moulding process with the maximum reliability. Also the stretch-blowing stations are equipped with a liquid-fed cooling system, which keeps the molds temperature constant.

4Bottles outletDuring the blowing process, an accurate measurement system checks that the process follows the pression profile required. In fact, a pressure drop would alter the container shape which would cause the automatic rejection of the container. The finished bottles are picked from the stretch-blowing stations by another rotary group of grippers and put onto an air conveyor which finally transfers them to the filling machines.

5Empty bottles transferAfter being manufactured by the stretch-blowing module (see EBS ERGON), empty bottles are conveyed from the blower to the filler by "neck-handling" direct transfer through a starwheel-starwheel system. The star-wheel at the blowmoulder outlet is equipped with grippers electronically synchronised with the brackets of the starwheel at the filler inlet.

6Electronic fillingA sensor detects the presence of the bottle at the filler inlet; the filling process starts only if a bottle is detected. The product to be bottled is fed from a small external tank to the filling valves by means of a pump or by gravity in the case of foam products. The filling process is electronic volumetric with magnetic flow-meters (VMAG models for conductive products) or electronic massic with mass meters based on the Coriolis' principle (VMAS models for nonconductive products). A flowmeter positioned upstream of each filling valve gauges the amount of product flowing through. The flow amount is gauged by pulses-counting: upon reaching the set amount of pulses for the current format, a signal is sent to the filling valve to be closed.

7Pick & place capping systemFull bottles are transferred to the capper by means of a star-wheel equipped with grippers. Caps are oriented in the correct position by a hopper-unscrambler standing outside the machine at an easy-access height, and are transferred to a pick & place device positioning the cap under the capping head, which moves downwards and applies the cap on the bottle.

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